Elle 1111 20th Street

GPI provided engineering consulting services to design the mechanical, electrical, plumbing, and fire protection systems to convert an existing office building into a mixed-use, 181,000 sq ft property with 180 units and 8,000 sq ft ground retail.

Residential floors 2 through 8 include a washer and dryer in each unit. The building now includes a below-grade garage which provides ample parking to residents. The project included “reskinning the building,” a complete renovation down to the existing concrete structure. The mechanical system was designed as a variable refrigerant, and a dedicated outdoor air system (DOAS) was provided for all ventilation. The existing switchboard was reused. Design included new rooftop amenities such a rooftop pool, new stairway pressurization, and an enclosed generator on the penthouse level. GPI provided a LEED energy model to achieve the performance path to satisfy the DC Energy Code.

Project Highlights

  • Owner/Client
    Elle
  • Location
    Washington, DC
  • Services
    Building Systems Engineering
    Electrical Engineering
    Mechanical Engineering
    Plumbing Engineering